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IDEAS Résumé de rapport

Project ID: FIKR-CT-2001-00160
Financé au titre de: FP5-EAECTP C
Pays: Ukraine

Pilot program units of contractors' computer codes with new algorithms

Individual Monitoring of the Internal Exposure (IMIE) computer code is developed for the purposes of the retrospective dosimetry. It gives to the assessor the power engine for the analysis and interpretation of bioassay measurements.

The main aim of the IMIE program is the reconstruction of multiple intakes on the base of the body counter or bioassay data and known exposure conditions, such as date of exposure, route of intake, AMAD and Type of Materials (in the inhalation case). The program allows comparing wide range scenarios of exposure in the case of unknown or non-standard exposure conditions: date of intake, route of intake (inhalation, ingestion, etc.), AMAD, Type of Materials of inhaled aerosols. Parameters listed above could be combined into user-defined "mixtures". The program analyses all combinations of parameters from the selected ranges and finds the best fit to the analysed measurement series. Simultaneous analysis of several data sets (e.g. faeces and urine) and 'direct dose assessment' for selected radionuclides (e.g. 3H, 137Cs) are also available.

The trial version of the IMIE is available from

Data input: Time trends of measurements can be entered into spreadsheet forms or loaded from a text file with delimiters (import from other application)

Radionuclides: 28 elements, 46 radionuclides:
3H, 32P, 33P, 35S, 51Cr, 54Mn, 59Fe, 58Co, 60Co, 65Zn, 89Sr, 90Sr, 95Zr, 95Nb, 99Tc, 99mTc, 103Ru, 106Ru, 110mAg, 132Te, 123I, 125I, 131I, 132I, 134Cs, 137Cs, 140Ba, 141Ce, 144Ce, 201Tl, 202Tl, 210Pb, 210Po, 226Ra, 228Th, 232Th, 234U, 235U, 238U, 237Np, 238Pu, 239Pu, 240Pu, 241Pu, 241Am, 243Am

Measurements: Urine, Faeces, Lung, Thyroid and Whole Body

Route of intake: Inhalation (aerosols, gases and vapours), Ingestion, Injection, Wound, Arbitrary mixture of intake routs

Type of Material: F, M, S, arbitrary mixture of Types

AMAD: 0.001 to 20µm, polymodal distribution represented by superposition of lognormal distributions ("mixture of AMADs")

Intake pattern: One or several intakes (acute or chronic)

Mode of interaction with user: Interactive Windows-style

Extended graphical tools for the data presentation and analysis:
- graphical selection of time intervals for analysis by means of the mouse-oriented 'drag-and-drop' technology;
- both linear and logarithmic scales;
- auto-scaling;
- mouse (like 'drag-and-drop' technology) zooming of XY plot fragments;
- 'right mouse button' quick menu;
- customised pattern of the graph, axes, grid, titles etc.

Mode of analysis:
-Full automatic modes: ICRP-78, Smart (these modes give the quickest results)
-Interactive modes: Semi-automated, Manual (for expert)
-Special Accident mode (modification of the Manual mode useful for analysis of accidental cases)
-Simultaneous analysis of several data sets from different data sources

Dose (intake) calculation Best estimate:
- weighted least-squares fit;
- unweighted least-squares fit.

Data output:

- In the table and on the XY plot (program window):
original (fitted) data points;
fitting curve;

- In the table (program window):
pattern of the reconstructed intake(s) (date and amplitude)
assessed Type of Materials and AMAD (for each reconstructed intake)
committed effective dose associated with each reconstructed intake
annual doses
total committed effective dose

Report about analysis results to:
- text file (with tab or comma delimiters);
- rich text format file (rtf);
- web page (html)

Additional Tools:
- Reference system on radionuclide information (more than 800 radionuclides)
- Clipboard tools for the export of data to Microsoft Windows applications (such as Microsoft Excel or Microsoft Word)
- Data export to other applications (curves: flat text file; graphics: metafile '.WMF', '.EMF' and bitmap '.BMP')

Informations connexes

Reported by

Ukrainian Radiation Protection Institute
Melnikova Street, 53
04050 Kiev
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